Application of holographic optical elements in buildings for various purposes like daylighting, solar shading and photovoltaic power generation

Since four years the ILB is developing lightdirecting building components, using holographic optical elements (HOE). The holograms are produced on films, which are laminated between two panes of floatglass. By the physical effect of diffraction different forms of light manipulation are possible, comparable to those of mirrors, prisms, lenses and other optical elements. Laminated glass with lightdirecting holograms allows a great variety of applications in architecture for utilization of solar energy, improvement of room comfort as well as design of solar light- and colour effects.